Air Temp Sensor- off car

A.,T.S (Air temperature sensor) Its a N.T.C thermistar. Meets specifications. They all have bio-metals and as they heat up the resistance decreases.
35degrees - 60 degrees
1.35 - 0.550

Thermo Fan switch- off car

Meets specifcations. ITs a N.T.C thermistar. It has bio-metals which bend at different rates. As the thermister heats up the resistance decreases.

Coolant Temp Sensor- off car

C.T.S (coolant temperature sensor) The C.T.S is a N.T.C thermister. As the coolant temperature sensor heats up the resistance decreases. The bio-metals inside bond at different temperatures.

20degress - 60 degrees

2.27 - 0.5

Air Flow Meter- off car

A.F.M (vane or flap air flow sensor) I tested a faulty 1. no results.

An air flow meter operates similar to an TPS. It has a potentiometer inside it and the swivel arm that attachs to the signal is hooked up to the flap piece that opens and closes. As the flap moves it moves the arm up and down the potentiometer (variable resistor) changing the output voltage depending on where it is on the potentiometer. The signal is sent to the ECU and tell it how much air flow is in the intake manifold.

MAF sensor- off car

MAF sensor (Mass Air Flow) 1.132v (No air flow) By blowing through it we get 3volts out of the signal. The results were within specifications. A M.A.F sensor works by, as air passes through the sensor the crystals change creating a high voltage output signal.

MAP sensor- off car

MAP Sensor - (manifold absolute pressure).A map sensor works as low vacuum is in the manifold a high output voltage of 5v. As vacuum is applied the output decreases depending on how much vacuum is applied.

TPS sEnsoR- off car

A TPS sensor is a variable resistor type. As the arm swivels on the variable resistor inside the resistance changes and causes the voltage across it to change as well which in turns changes the signal voltage output to.